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Due to current fluctuations my smps and ups was burnt, so i called the technician he replaced the ups,smps and motherboard ,and then my computer turned on when it was booting it showed a message like "media test failure check cables" and then i can see my desktop with all icons.but i dont see any sound symbol on the task bar the place where we can time.when i open the control panel>sound and speech options it shows like no audio device.
when i try to play any song through windows media player it shows a message like sound card or sound controller is not installed in the computer install the sound card.and my computer has internal sound card. what should i do now, shall i purchase new sound card so that i can connect it to pci

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Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

Your computer tries to "boot" (start-up) from several devices:
* floppy-disk (if installed)
* disk-drive (if not "dead"),
* CD/DVD optical device (if "bootable" media has been loaded)
* PXE --> Pre-Execution Environment -- checks if there is a connection between the network-adapter on your computer to a "boot-server" on your local network -- it can load Windows from that "boot-server".

The "media-test failure" indicates that there is no network-cable attached to your computer *AND* the other-end of the network-cable is *NOT* connected to the "boot-server". So, you can that "error" message.

To use PXE, you need "media" -- a network cable connecting yur computer to a "boot-server". The "media test faiure, check cable" reports that no network-cable exists, or that it does exist WITHOUT being connected to a boot-server.

Probably, your computer failed to boot from a DEAD disk-drive, and then tried floppy/CD/USB before checking PXE.

You haved enabled the capability for your computer to "boot" itself by reading from a boot-server connected to your network-cable.

But, the network-cable is unplugged, resulting in the "check cable" message.

What this _could_ mean is that the computer primarily tried, and failed, to boot from your disk-drive, and secondarily tried, and failed, to boot from your CD-ROM, and so it made a tertiary triy, which failed, to boot from the "network", i.e., that your hard-drive is not functioning.

Reboot, and enter "BIOS setup", and disable the "boot from network" option, to get rid of those error-messages. But, it's still possible that your disk-drive is malfunctioning.

Did you install the windows system etc? If not boot from the system restore cd and it should work. If it will not boot from the cd-rom then more damage was done then was apparent and the unit would require factory qualified repair. Be sure of the cost before committing to repair since on laptops sometimes it is cheaper to replace the repair. Good Luck

try going into the bios and changeing the boot device to hard drive. More iformation is needed though to help you ie os version, what you done just before this problem had arisen , brand name of your computer. let me know im sure i can assist you and try not to get frustrated these things happen more often than you know.

This is an Invalid / Non System Disk error.In your Bios settings change the "First boot device" option to your hard disk.If you have only one hard disk set it to "HDD 0"Other causes of the problem are: